[1]
A. A. Dovgoshei and D. V. Dordovskii, “Betweenness relation and isometric imbeddings of metric spaces”, Ukr. Mat. Zhurn., vol. 61, no. 10, pp. 1319–1328, Oct. 2009, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/3103